** Changed in: ubuntu-kernel-tests
Status: Fix Committed => Fix Released
** Changed in: linux (Ubuntu)
Status: Triaged => Won't Fix
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BTW, the vfat stress failure in Bionic 4.18 has gone with retest as
well. (node pepe)
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Title:
ubuntu_vfat_stress failed again with P
Retested on both entei and baltar,
passed on entei but still failing on balter (with the whole test suite)
Log for balter:
https://pastebin.ubuntu.com/p/82NXmVYS93/
I will give it another shot on balter.
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Sam, can this be retested, I think we were getting into dirty page write
amplification because of using vfat on a tmpfs backing store file. I've
reworked the test now to use bog standard vfat on a loopbacked file.
Fix committed: http://kernel.ubuntu.com/git/ubuntu/autotest-client-
tests.git/commit
OK, managed to reproduce this:
[ 3913.025219] VFAT options: check=s
[ 3913.025268] Stress test:
/home/ubuntu/autotest/client/tmp/ubuntu_vfat_stress/src/stress-ng/stress-ng
--verify --times --metrics-brief --syslog --keep-name -t 10s --hdd 2 --hdd-opts
sync,wr-rnd,rd-rnd,fadv-willneed,fadv-rn
Started, PID 107847
stress-ng now terminated
Stopped, PID 107847 (after 4 seconds)
umounting vfat
umount: /mnt/vfat-test-15951: target is busy.
umount vfat /mnt/vfat-test-15951 failed
umounting tmpfs
umount: /mnt/vfat-test-15951: target is busy.
umount /mnt/vfat-test-15951 failed
Seems like a process is still running at umount time and a re-mount
fails. I think it snowballs after that.
[ 1209.031563] Mount point: /mnt/vfat-test-15951
[ 1209.032392] Started, PID 67047
[ 1224.249103] stress-ng now terminated
[ 1224.249203] Stopped, PID 67047 (after 14 seconds)
[ 1224.24931
For the P9 baltar, I can reproduce the stress-ng task blocking issue by
just running the test directly (with Bionic in -released)
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